Preparation method of nitrogen-doped bismuthyl carbonate catalyst

A technology of bismuth oxycarbonate catalyst and nitrogen doping, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., which can solve the problems of low availability and achieve good catalytic effect and dispersibility good effect

Inactive Publication Date: 2018-01-12
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

low availability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Dissolve 5g of bismuth nitrate in 500mL of dilute nitric acid with a concentration of 30% by mass, add 160mL of glycine with a concentration of 180g / L dropwise under stirring, continue stirring for 20min after the addition is complete, a large amount of precipitation occurs, and the precipitate is separated , the precipitate is added to ammonia water with a mass percentage concentration of 20% to make a suspension, which is transferred to a hydrothermal reaction kettle with a polytetrafluoroethylene substrate, and placed in an oven at 180°C After reacting for 24 hours, it was naturally cooled, and the solid obtained after centrifugation was washed with deionized water and dried to obtain a nitrogen-doped bismuth oxycarbonate catalyst.

[0011] 0.5g of nitrogen-doped bismuth oxycarbonate catalyst was added to 100mL of methylene blue wastewater with a concentration of 25mg / L, and reacted for 50min under the irradiation of a 120W LED lamp, and the decolorization rate was 92...

Embodiment 2

[0014] Dissolve 5g of bismuth nitrate in 100mL of dilute nitric acid with a concentration of 10% by mass, add 80mL of glycine with a concentration of 20g / L drop by drop under stirring, continue stirring for 10min after the addition is completed, a large amount of precipitation occurs, and the precipitate is separated , the precipitate was added to ammonia water with a mass percentage concentration of 10% to make a suspension, which was transferred to a hydrothermal reaction kettle with a polytetrafluoroethylene substrate, and placed in an oven at 160°C After reacting for 18 hours, it was naturally cooled, and the solid obtained after centrifugation was washed with deionized water and dried to obtain a nitrogen-doped bismuth oxycarbonate catalyst.

[0015] 0.5g of nitrogen-doped bismuth oxycarbonate catalyst was added to 100mL of acid scarlet wastewater with a concentration of 15mg / L, and reacted for 55min under the irradiation of a 120W LED lamp, and the decolorization rate was...

Embodiment 3

[0018] Dissolve 5g of bismuth nitrate in 200mL of dilute nitric acid with a concentration of 20% by mass, add 120mL of glycine with a concentration of 80g / L dropwise under stirring, and continue stirring for 20min after the addition is completed, a large amount of precipitation occurs, and the precipitate is separated , the precipitate is added to ammonia water with a mass percentage concentration of 20% to make a suspension, which is transferred to a hydrothermal reaction kettle with a polytetrafluoroethylene substrate, and placed in an oven at 180°C After reacting for 24 hours, it was naturally cooled, and the solid obtained after centrifugation was washed with deionized water and dried to obtain a nitrogen-doped bismuth oxycarbonate catalyst.

[0019] 0.5g of nitrogen-doped bismuth oxycarbonate catalyst was added to 100mL of rhodamine B wastewater with a concentration of 15mg / L, and reacted for 60min under the irradiation of a 120W LED lamp, and the decolorization rate was 9...

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PUM

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Abstract

The invention discloses a preparation method of a nitrogen-doped bismuthyl carbonate catalyst. The preparation method comprises the following steps: dissolving 5 g of bismuth nitrate into 100 to 500 mL of dilute nitric acid with mass percentage concentration of 10 to 30 percent, adding 80 to 160 mL of glycine with the concentration of 20 to 180 g/L dropwise under stirring, continuously stirring for 10 to 20 minutes after dropwise adding, generating a large amount of precipitate, separating the precipitate, adding the precipitate into ammonia water with the mass percentage concentration of 10 to 20 percent to prepare turbid liquid, transferring the turbid liquid into a hydrothermal reaction kettle of a polytetrafluoroethylene substrate, putting into a drying oven, reacting at 160 to 180 DEGC for 18 to 24 hours, naturally cooling, centrifuging to obtain a solid substance, washing with deionized water and drying to obtain the nitrogen-doped bismuthyl carbonate catalyst. The nitrogen-doped bismuthyl carbonate catalyst obtained through amino acid combination and the hydrothermal reaction of the ammonia water has high dispersibility and a good catalytic effect.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a preparation method of a nitrogen-doped bismuth oxycarbonate catalyst. Background technique [0002] With the development of science and technology, toxic organic pollutants from industrial and agricultural production seriously threaten the environment and human health. It is of great significance to seek a new and efficient environmental governance technology. Photocatalytic technology has become an emerging environmental treatment technology with important application prospects due to its advantages of energy saving, high efficiency, complete pollutant degradation, and no secondary pollution. In recent years, the development of new and efficient visible light photocatalysts has become an important research content in photocatalytic technology. Among them, photocatalytic materials with surface plasmon resonance effect, because of their unique sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J37/10
Inventor 朱丽君马建锋
Owner CHANGZHOU UNIV
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